grep 正则表达式中$符号的问题

simonlive

这个问题对我来说有点诡异。

unix shells by example（unix shell范例精解）第三版的第三章，第四版应该是在第四章的课后题，第三题要打印所有以700结尾的行，
我输入的命令是：grep "700$" datebook
没有任何输出，echo $?,返回的是1，说明没有找到匹配。但是我用vim datebook,然后查找700$,能找出来。

一开始是怀疑文本格式的问题，所以还特意编辑了一下以700结尾的行。还是不行。我用的是例子是随书CD上的例子，是在网上下的。


下面就是datebook文件的内容。

Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300
Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500
Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400
Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700
Jennifer Cowan:548-834-2348:583 Laurel Ave., Kingsville, TX 83745:10/1/35:58900
Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100
Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92743:7/25/53:85100
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200
Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700
James Ikeda:834-938-8376:23445 Aster Ave., Allentown, NJ 83745:12/1/38:45000
Barbara Kertz:385-573-8326:832 Ponce Drive, Gary, IN 83756:12/1/46:268500
Lesley Kirstin:408-456-1234:4 Harvard Square, Boston, MA 02133:4/22/62:52600
William Kopf:846-836-2837:6937 Ware Road, Milton, PA 93756:9/21/46:43500
Sir Lancelot:837-835-8257:474 Camelot Boulevard, Bath, WY 28356:5/13/69:24500
Jesse Neal:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
Zippy Pinhead:834-823-8319:2356 Bizarro Ave., Farmount, IL 84357:1/1/67:89500
Arthur Putie:923-835-8745:23 Wimp Lane, Kensington, DL 38758:8/31/69:126000
Popeye Sailor:156-454-3322:945 Bluto Street, Anywhere, USA 29358:3/19/35:22350
Jose Santiago:385-898-8357:38 Fife Way, Abilene, TX 39673:1/5/58:95600
Tommy Savage:408-724-0140:1222 Oxbow Court, Sunnyvale, CA 94087:5/19/66:34200
Yukio Takeshida:387-827-1095:13 Uno Lane, Ashville, NC 23556:7/1/29:57000
Vinh Tranh:438-910-7449:8235 Maple Street, Wilmington, VM 29085:9/23/63:68900

lululau

dos文本吧？

cxfcxf

grep -E "700$" datebook
Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700
Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700

simonlive

原帖由 lululau 于 2009-9-7 01:11 发表
dos文本吧？

应该不是这个原因，我用vim可以搜索到。

simonlive

原帖由 cxfcxf 于 2009-9-7 03:25 发表
grep -E "700$" datebook
Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700
Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700

加了-E还是不行，这个问题实在诡异。我把文件传上来 datebook.tar (10 KB, 下载次数: 43)

2009-09-07 08:32 上传

点击文件名下载附件

。

HH106

2楼已经说清楚了
#cat -A datebook
Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300^M$
Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500^M$
Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400^M$
Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700^M$
下面略..

blackold

dos格式.
grep '700.$'就可以搜索到了。
vim是否搜索到与是否是dos格式没有必然的联系。

simonlive

原帖由 HH106 于 2009-9-7 08:55 发表
2楼已经说清楚了
#cat -A datebook
Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300^M$
Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500^M$
I ...

明白了，谢谢！